CurtC1 from the Shell
Oil Forum:
My thread got poofed for I mentioned some other companies' oils we have had success with.
Valvoline Racing
Oil (available at NAPA) has been working out real well for a while now.
Joe Gibb's Racing
oil :
http://www.joegibbsracingoil.com/products.php has been working extremely well also for many builders. They have a terrific break in oil also.
Remember - for break in you should ALWAYS use GM's EOS available at most GM dealers and all GMPP Dealers.
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I too have been looking for typical on the shelf in regular store oil that people can use to stop this madness, but no companies will really fess up.
Issue is: ZDDP in decent amt's can lead to pre-100k mile catalytic converter malfunction. Auto industries converted to hyd roller cams to be able to use oils without much ZDDP. Remember, they have to warranty these and some other emmission items for 100K miles in most states.
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Hope this helps you guys somewhat.